15:3分之2
=15:2/3
=15÷2/3
=15×3/2
=45/2
=45:2 比值是2分之45
5:1.2
=(5×5):(1.2×5)
=25:6
=25/6 比值是6分之25
8分之3:2分之1
=3/8:1/2
=3/8÷1/2
=(3/8)×2
=3/4 比值是4分之3
=3:4
15:3分之2
=15:2/3
=15÷2/3
=15×3/2
=45/2
=45:2 比值是2分之45
5:1.2
=(5×5):(1.2×5)
=25:6
=25/6 比值是6分之25
8分之3:2分之1
=3/8:1/2
=3/8÷1/2
=(3/8)×2
=3/4 比值是4分之3
=3:4